Barange, Nilesh Chu, Van Ben Nam, Minwoo Ahn, In-Hwan Kim, Young Dong Han, Il Ki Min, Byoung Koun Ko, Doo-Hyun 2024-01-20T02:34:35Z 2024-01-20T02:34:35Z 2021-09-05 2016-12 1614-6832 https://pubs.kist.re.kr/handle/201004/123369 Nanopatterned CuInGaS2 (CIGS) thin films synthesized by a sol-gel-based solution method and a nanoimprint lithography technique to achieve simultaneous photonic and electrical enhancements in thin film solar cell applications are demonstrated. The interdigitated CIGS nanopatterns in adjacent CdS layer form an ordered nanoscale heterojunction of optical contrast to create a light trapping architecture. This architecture concomitantly leads to increased junction area between the p-CIGS/n-CdS interface, and thereby influences effective charge transport. The electron beam induced current and capacitance-voltage characterization further supports the large carrier collection area and small depletion region of the nanopatterned CIGS solar cell devices. This strategic geometry affords localization of incident light inside and between the nanopatterns, where created excitons are easily dissociated, and it leads to the enhanced current generation of absorbed light. Ultimately, this approach improves the efficiency of the nanopatterned CIGS solar cell by 55% compared to its planar counterpart, and offers the possibility of simultaneous management for absorption and charge transport through a nanopatterning process. English WILEY-V C H VERLAG GMBH Ordered Nanoscale Heterojunction Architecture for Enhanced Solution-Based CuInGaS2 Thin Film Solar Cell Performance Article 10.1002/aenm.201601114 1 ADVANCED ENERGY MATERIALS, v.6, no.24 ADVANCED ENERGY MATERIALS 6 24 N scie scopus 000396320500006 2-s2.0-84984852069 Chemistry, Physical Energy & Fuels Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Energy & Fuels Materials Science Physics Article PHOTOVOLTAICS FABRICATION PRECURSORS BINARY POWER INKS CuInGaS2 (CIGS) solar cells imprint nanopatterning optical and electrical management solution process